Sewing-machine.



V. B. SNEADJ SEWING MACHINE, I APPLICATION FILED DEC. 6, 1916, I 1,246,795. Patented Nov. 13, 1917.

2 SHEETS-SHEET I.

V. 8. SNEAD.

SEWING MACHINE.

APPLICATION FILED DEC. a. 1916.

Patenfed Nov. 13, 1917.

2 SHEETS-SHEET 2 Gnome.

warren sTATns PATENT ormon.

VINCENT .B. snnan, or wrorirra, KANSAS.

SEWING-MACHINE.

Specification of Letters Patent.

origami application filed my 11, ieia-seriai no. 96,884. tnivi'ae'aana this eiapliationfild December s, 1916. Serial No. 135,457.

To all whom it may concern:

Be'it known that I, VrNc'nNT B. Snnam'a citizen of the United States, residing'at Wichi'ta, in the county of Sedgwick and State of Kansas, have invented certain'ne'iv and useful Improvements in Sewing-Ma.- chines, of which the following'i's a specification.

The present invention relates to sewing machines, and the object is to provide an inexpensive and simple mechanism of this character, which is thoroughly practicable, and which is especially designed for sewing leather, such as harness, shoes and the like. The present application is a division of application Serial No. 96,884, filed May 11, 1916, and relates to the needle and presser foot operating mechanism.

Primarily the device is intended for the use of farmers and artisans, but is of course not limited to such use.

'An embodiment of the invention that has proven entirely practicable, is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of the apparatus.

Fig. 2 is a plan view of the same.

Fig. 3 is a horizontal sectional view on the line 33 of Fig. 1.

Fig. 4; is a vertical sectional View. through tfihe frame head and bed on the line H'Of Fig. 5 is a detail view in elevation of the presser or feeder foot support. 7

Fig. 6 is a detail sectional view on the line 66 of Fig. 1.

Fig. 7 is an end elevation of the head of the machine illustrating the arrangement of the thread thereon, and

Fig. 8 is a view in elevation of the rear side of the actuating cam wheel.

Similar reference numerals designate cor responding parts in all the figures of the drawings.

In the embodiment illustrated, the frame includes a bed 11, having a suitable arm 12 overhanging the same, said arm terminating at its free end in a vertical head 18. In this head is located a vertically reciprocating needle holder 14 that extends above the head, and is provided with an eye 15 to receive the thread that is engaged with the needle, said thread being brought from a suitable spool, as 16 mounted on a spindle 17 carried hythe-arm i2. "The'neeule bar leis-reciprocated bya lever 18 -fu'lcrum'ed between its ends on a bolt i9 that 'is "fixed in thefra'frie arm '12, one end the lever being; slatted,

"as "shown-"at 19 to receiveabolt'orpin20 that i's'engagedwith the needlebar 14. The other end of the lever is prdvided'on one side with a roller 21 engaged in a cam groove 22 formed in the 're'ar'side ofan aperating wheel 23. This wheel, as shown at '24, is journaled on the frame arm 12 con tiguous to its juncture with the bed 11, and said wheel is provided on its outer side with a suitable handle knob 25.

' A presser or feeder foot support is also mounted in the head 18. This support consi's'ts of a vertical bar 26 having at its lower end an 'enl'argement'27 that surrounds the lower portion of the needle bar 14:, and has r-otatably' supported thereon, a collar 28. The

collar 28is normally held against rotation by a set screw 29'threaded'therethrough and engaging the enlargement 27 The 'pr'es'se'r or feederfoot is designated 30, and is detachably mounted by a set screw 31 on the lower-end of the'arm 32-secured to a yoke 83 that'embraces-and ispi'voted to the opposite sides of the collar28, as shown at 3 4. The

under face of the foot 30 is roughened, as v and engages the upper face 'of'the guide 38.

The vertical movement of the support/26, and consequently of the presser or feeder foot 30 is secured by means of a lever 10 fulcrumed between its ends on the bolt 19, said lever having one end engaged beneath a projection llformed upon the bar 26,'the other end of the lever having on one side a roller 42 whichis engaged by a cam extensi'on 43 projecting beyond the rear face of the operating wheel 23. It'will thus be evident that during the greater part of the movement of he cain' wheel 23, the lever 40, and consequently th'e'sup'p'ort andipress'er foot, are stationary, but when the campertion 13 engages the "roller 42, there will be a quick upward and downward movement of the support and the presser foot. A spring 44, shown in Fig. 5, bearing upon a projection 45 of the bar 26, serves to again depress the support and presser foot after its release by the cam portion 43.

Located directly above the enlargement 27 of the. support 26, is a circular plate or disk 46, through which the needle bar 14 passes, said plate being carried by a vertical bar .7 also slidably mounted in the head 13 and engaged by one arm of a lever 48 fulcrumed upon the bolt 19, and having an offset portion 49 located beneath the lever 18. In this oifset portion is adjustably threaded a screw 50, the upper end of which is disposed in the path of the lever 18, so that when the rear arm of the lever 18 is depressed, the rear arm of the lever 48 will likewise be moved, thus elevating the plate 46. The upper end of the presser foot bar 32 has an oifset projection 51 that normally rests on the plate 46, and consequently when the said plate is elevated, the presser foot will be swung so as to cause a feeding movement this movement takin lace a ainst 7 b D the action of the spring 36.

Briefly described, the operation of the mechanism is as follows: Assuming the parts in the position shown in Fig. 1, if the cam wheel 23 is turned to the right, the first action will be the elevation of the needle, and when said needle is raised and about reaches the upper end of its stroke, the lever 18 will strike the screw 50, thereby causing the elevation of the plate 46. This movement of the plate will cause the presser or feeder'foot 30 to be swung, and thereby effect a feeding operation. The needle then descends and passes through the work, and while in its lowermost position, the lever 18 will be operated, thereby raising the support 27 and the foot 80. As soon as the said foot is elevated above the work, the spring 36, which has been compressed by the elevation of the plate 46, will react and cause the foot to reassume its normal position, or in other words, said foot will then be located for a repetition of the operations above described.

It is believed to be unnecessary to describe the shuttle mechanism herein. The same constitutes the subject-matter of co-pending application, Serial No. 96,884.

From the foregoing, it is thought that the construction, operation and many advan tages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or scope of the invention.

Having thus fully described my invention,

. port, a reciprocating what I claim as new, and desire to secure by Letters Patent, is

1. In a sewing machine, the combination with a needle holder member and a movable presser foot member, of a lever connected to one member for operating the same, and a lever connected to the other member for operating it, Said levers having a common fulcrum and one being operated by the other.

2. In a sewing machine, the combination with a supporting frame, of 'QItlCQlly movable needle holder member and a vertically movable presser foot member'mounted on one end of the frame, an operating device mounted on the other endof the frame, a lever fulcrumed between its ends on the frame, one end of the lever being engaged with the operating device, the other end heing connected to one of the members, and

another lever fulcrumed on the frame alongside the first lever and being connected to the other member, said second l ver having an offset' portion disposed across the path of movement of the first level and being operated thereby.

3. In a sewing machine, the combination with a supporting frame, of a vertically movable needle holder and a vertically movable presser foot member mounted on one end of the frame, an operating device mounted on the other end of the frame, a. fulcrum located on an intermediate portion of the frame, a lever mounted on the fulcrum, one end of the lever being connected with the needle holder, the other end being engaged with the actuating device, and an other lever also mounted on said fulcrum, one end of the lever being connected with the presser foot, the other end having an offset portion disposed below and engaged by the first mentioned lever.

4. In a sewing machine, the combination with a frame head, of a vertically reciprocating support mounted thereon, a presser foot pivoted to the support, a device movable with respect to the support and engaging the presser foot, and means for alternately moving the support and device.

5. In a sewing machine, the combination with a frame head, of a vertically reciprocating support mounted thereon, a presser foot pivoted between its ends to the supdevice movable on the head with respect to the support and engaging the upper portion of the presser foot, to swing the same, and means for alternately moving the support and device.

6. In a sewing machine, the combination with a frame head, of a vertically reciprocating support mounted thereon and having a lower enlargement, a collar rotatably mounted on the enlargement, means for holding the collar against rotation, a presser foot pivoted between its ends to the support, a spring bearing against the presser foot for swinging the same in one direction, a plate having a reciprocatory mounting on the head and rotatably engaged by the upper portion of the presser foot, and means for alternately moving the support and plate.

'7. In a sewing machine, the combination with a needle holder, of a lever for operating the same, a vertically movable support, a lever for operating the support, a presser foot pivoted to the support, a lever operated by one of the first mentioned levers to swing the presser foot alternately with the movement of the support carrying said presser foot.

8. In a sewing machine, the combination with a frame, of a vertically movable needle holder mounted on one end of the frame, a vertically movable presser foot support mounted on one end of the frame, a rotatable cam mounted on the other end of the frame,

a fulcrum mounted on an intermediate portion of the frame, a lever journaled on the fulcrum, one end of the lever being connected to the needle holder, the other end being operated by the Cam, a second lever 25 journaled on the fulcrum and connected at one end with the presser foot and having its other end engaged with the cam, a presser foot pivotally mounted on the support, a device engaging said presser foot for swinging 30 the same, and a third lever journaled on the fulcrum and engaged with said device, said lever having a portion arranged to be engaged by one of the first mentioned levers to actuate it. 35 In testimony whereof, I affix my signature in the presence of two witnesses.

VINCENT B; SNEAD.

lVitnesses GRANT BALLANTINE, EARLE R. MOONEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

